Brettski,
I've tried a lot of different ones...none seem to work..in fact I sometimes wonder if signs that warn against fishing aren't actually an invitation to some. After years of trying different things, I've about concluded that hidden game cameras(and one visible one), a few standard no trespassing signs, and most important of all, unscheduled, out of the ordinary visits are the best ways for the weekend pond meister to protect their investment. It can be a most frustrating problem in certain regions.
